Stay-bolt.



C. A. SELEY.

STAY BOLT.

N FILE I APPLICATIO D MAR. 26. l9l4. 1,165,456. Patented Dec. 28, 1915.

theirs CHARLES A. SELEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO KERNER MANUFACTURING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

STAY-BOLT.

1,165,4c5ti.

Specification of Letters Patent.

Patented Dec. 28, 1915.

Application filed March 26, 1914. Serial No. 827,334.

To all whom it may concern:

Be it known that 1, CHARLES A. SELEY, a citizen of the Unitec States, residing'at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Stay-Bolts, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, forming part of this specification, in which Figure 1 is a side elevation partially in section of one form of bolt to which my invention has been. applied. Fig. 2 is an end view thereof, and Fig. 3 is a sectional view on the line III-Ill of Fig. 1.

This invention relates to an improvement in stay bolts and is designed to provide a bolt having a body portion formed of a plurality of members and in which the tellt, le hole is so placed that the old form of tools used by mechanics when applying a Jolt to a boiler can be used and at the same time providing a tell-tale hole which extends into or adjacent to the solid metal of one of the body members, so that there is no danger of leakage through the telltale hole before tie bolt has been broken.

I am aware that it is old to provide boiler stay bolts with tell-tale holes, and I am also aware that it is old to provide stay bolts of this character having a plurality of memhers with tell-tale holes extending into the head from the outer end thereof. In all structures known to me. in which the bolt was provided with a plurality of body members, the tell-tale holes were drilled parallel with the axis of the bolt into or adjacent to the solid metal of the body portions, but in such cases the tell-tale holes were placed remote from the axis of the bolts, so that it was necessary to make new tools for upsetting the ends of the bolts after they have been placed in position. The usual tool used for upsett ng the regular stay bolts is provided with a central proiection which is adapted to enter the tell-tale hole to position the tool, and the end of the bolt is then upset by means of an air tool or by a hand hammer. By making the bolt in accordance with my invention the regular upsetting tools can be used, so that the workman is not required to carry several diflerent sets of tools.

Copies Referring the bolt into the solid metal of one of the I members of the body portion.

In the drawings, I have only shown a tell-tale hole drilld through one of the heads, but it will be readily understood by those familiar with the art that a hole may be drilled through both heads, and it will also be understood that the hole need not extend to the end of the head, as the requirements merely call for a hole drilled a certain depth. I am aware that if a hole were drilled in the center of the head in line with the axis of the bolt and did not extend to the opening between the two members that there would be no leakage, but this would be a very dangerous practice as-these holes are usually drilled hit or miss and in a great many cases the holes would extend to the part between the two body members, and thereby destroy the bolt.

The advantages of my invention result from the provision of a bolt having a telltale hole extending from the center of the outer face of one of the heads of the bolt at an angle to the axis of the bolt into or toward the body of metal of one of the members extending from head to head of the bolt.

I claim:

A stay bolt for steam boilers, having a securing head at both ends, and a body portion formed of a pluralitv of separate members extending from head to head, the e being a tell-tale hole through one of said heads extending from the center of the outer face thereof into one end of one of the body members and at an angle to the longitudinal axis of the bolt.

In testimony whereof, I have hereunto set my hand.

CHARLES A. SELEY. Witnesses:

Jesse B. HELLER, H. M. CoRwIN.

of this patent may be obtained for five centseach, by addressing the Commissioner of Patents.

' Washington, D. C. 1 

